<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>登录页面</title>
    <!-- 引入 Bootstrap CSS 文件 -->
    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0/dist/css/bootstrap.min.css">
</head>
<body>
    <div class="container mt-5">
        <div class="row justify-content-center">
            <div class="col-md-6">
                <div class="card">
                    <div class="card-header">用户登录</div>
                    <div class="card-body">
                        <form action="/doLogin" method="post">
                            <div class="form-group">
                                <label for="username">用户名</label>
                                <input type="text" class="form-control" id="username" name="username" placeholder="请输入用户名">
                            </div>
                            <div class="form-group">
                                <label for="password">密码</label>
                                <input type="password" class="form-control" id="password" name="password" placeholder="请输入密码">
                            </div>
                            <button type="submit" class="btn btn-primary">登录</button>
                        </form>
                    </div>
                </div>
            </div>
        </div>
    </div>
